Quadrilateral means "four sides", and squares and rectangles do have right angles. Rhombuses are quadrilaterals, but do not have right angles.
A quadrilateral is any shape with four sides; angles can be acute or obtuse. A perfect square is the only quadrilateral with only right angles.
No, if it has right angles it is a special case, such as rectangle, but in general it does not have to have any right angles
A quadrilateral with 4 right angles is a rectangle
-- Every quadrilateral has four sides.-- If it has no right angles, then it could be a parallelogram, a rhombus,a kite, a trapezoid, or any non-regular quadrilateral.
a quadrilateral with no right angle is?
4 because the 4 interior angles of any quadrilateral add up to 360 degrees
It is a convex quadrilateral, as the remaining angles could be any two angles with a sum of 180 degrees.
It is a rhombus that has 4 equal sides but no right angles.
Any quadrilateral in which at least one (and therefore at least two) angles are not right angles is not a rectangle. The majority of these do not have a specific name.
If it is a quadrilateral it cannot be "not a quadrilateral"!
Any kite or square.
a rectangle is any quadrilateral with four right angles